A long, long, long time ago -- far earlier than the founding of this universe -- there was a time that those in RONS Orgs call LTA. The time track in LTA was similar to our own time, with Inc. 1, Inc. 2, world wars, and so on. In fact, it was very similar up to around 1990, when the histories began to diverge.
In particular, there was a devastating nuclear war in LTA's 1990's. (Yes, LTA had a similar system of dating.) But we managed (so far!) to avoid that in our time, called TTA. And now our 21st century is dedicated to making things better rather than cleaning up the damage.
In LTA, things became worse and worse until everyone decided to hold a referendum -- should we continue this losing game or start over? The vote was close, but it was decided to start LTA over.
LTA stands for Last Time Around. By starting over, we have created a new history, called TTA for This Time Around.
Have you ever prophesied? It was easy, if you could remember LTA. Just ask yourself what happened next in LTA, then say that's what the future (in TTA) holds, and viola! You're a prophet. But now that the histories are diverging, that no longer works.
And to answer your question, Bobthelearneruk, there was auditing in LTA time. But the bad guys took over the C of S and corrupted the tech -- condemning thetans to eternal misery instead of clearing them. The good guys, operating off planet, did try to provide some "good" auditing, but they never could do so in sufficient quantity.
There may have been other instances of auditing in between, but I'm not aware of them.
Helena